What is the Battery size for CMHT77633? Wilson October 03, 2020 20:00 The CMHT77633 takes one 9 volt battery. Related articles Craftsman CMHT77637 Laser Distance Measure Manual What does the E-b code mean on model # CMCE520B? Are the 19.2 batteries interchangeable with the 20 v batteries? Comments 0 comments Please sign in to leave a comment.